Gateway Disconnects and SD Card Not Detected

I have a few dozen sites ALL running straight ticket Ubiquiti Unifi. They all have multiple UAP AC Pros, Pro 4 Gateways, US-24-250w or US-48-500w POE switches, and they ALL have a cloud key.

I have one problimatic site where once or twice a week my Gateway will disconnect, but the site will still be manageable via VPN. I will SSH into the gateway and try the "set-inform" command to the IP address of the cloud key, but it refuses to adopt.

Only by using the "reboot" command does the Gateway reconnect to the cloud key / controller.

This same site will also expierience the cloud key failing to backup once or twice a week because the SD card is NOT detected. Every time this happens I'm forced to disable Auto Backup, restart the cloud key, and re-enable Auto Backup. Magically the card is detected again.